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《Ordnance Material Science and Engineering》 2009-01
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Corrosion property of magnesium alloy AZ31

KUANG Jun1,LI Gang1,HAO Shengzhi2,XIANG Jun1,QIU Xingwu1,QIU Ling1(1.School of Material Science and Engineering,Liaoning Technical University,Fuxin 123000,China;2.State Key Laboratory of Material Modification by Laser,Ion and Electron Beams,Dalian 116024,China)  
The rapid surface alloying of AZ31 magnesium alloy by high current pulsed electron beam(HCPEB) was investigated.The microstructure of surface alloyed layer was analyzed and the corrosion property of AZ31 magnesium alloy samples in 5% NaCl solution before and after alloying was measured.The results show that within the scope of 10 μm deep layer,Al element content increases in the alloying layer and grain refines with Al element in the form of solid solution.Alloying aluminum on surface of AZ31 magnesium alloy can improve the corrosion resistance.The corrosion potential of the original sample is-1 231 mV and the polarization resistance is 0.453 1 kΩ·cm2.After alloying, the corrosion potential increases to-669.1 mV and the polarization resistance improves to 2.202 kΩ·cm2.The polarization resistance increases almost five times than that of original sample.
【Fund】: 大连理工大学三束材料改性国家重点实验室开放课题资助(0601)
【CateGory Index】: TG146.22
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